Iot

How I created a 'physical' alarm to warn me when my servers are down

NOTE: This post is originally published at dev.to This post contains a weekend project I worked on to create an alarm when my AWS EC2 servers are down. Tools and technologies used: AWS Lambda, EventBridge, Greengrass, Raspberry Pi, Active Buzzer and LED light (as the alarm), GPIO, etc. Architecture: How it works: When an EC2 is stopped or terminated, EventBridge will capture the event. EventBrige will trigger the Lambda function (PublishToIotCloud) which publish a message to IOT cloud with the topic ‘alarm’.

Getting started with AWS Greengrass and Raspberry Pi

NOTE: This post is originally published at dev.to This post walks through the steps required to set up AWS Greengrass on your Raspbarry pi. Install OS for Raspberry Pi on SD card Goto https://www.raspberrypi.org/downloads, download and install the Raspberry Pi Imager software to your local machine which will guide the installation. Once installed, open the Raspberry Pi Imager software and select the relevant OS (Raspberry Pi OS 32bit is recommended), SD Card and it will create the OS image in the SD card provided.